The CEO of a Tennessee company that specializes weapons and tactical training is threatening to “start killing people” if President Barack Obama moves forward with gun control measures.

In a video posted to YouTube and Facebook on Wednesday, Tactical Response CEO James Yeager went ballistic over reports that the president could take executive action with minor gun control measures after the mass shooting of 20 school children in Connecticut last month.

After the Drudge Report likened Obama to Adolf Hitler and Joseph Stalin on Wednesday, pro-gun conservatives expressed outrage over the idea that the White House could act without Congress.